Polling also shows the two major parties are moving further and further apart, meaning the old strategy for how to win elections (run toward the party base to win primaries, then pivot back to the center to win general elections) is becoming an increasingly difficult balancing act.

While November is still a long way off, primary season began with the Texas primary on March 6, which was set up a showdown between Republican incumbent Ted Cruz and Democratic challenger Beto O’Rourke for one of the state’s two Senate seats. On March 20, Illinois held a primary that put in motion what is expected to be the most expensive gubernatorial race in U.S. history, and also ended a bitter battle between a conservative Democrat and a progressive challenger for the state’s third House district.

The rest of the state primaries are scheduled between now and November, beginning with Indiana, North Carolina, Ohio and West Virginia going to the polls on May 8. Below is the schedule for the other primary election dates, courtesy of the National Conference of State Legislatures, as well as the dates for two special elections that will occur before Election Day on November 6, 2018.